She said: "No Conservative member on this committee with a vote was able to recommend the report itself to the House.

"And every one of us, while we share different views about the culpability of News Corporation and the degree of culpability of James Murdoch in particular, none of us were able to support the report and we all voted against it.

"That will mean it will be correctly seen as a partisan report and will have lost a very great deal of its credibility, which is an enormous shame."

The sticking point for Conservative members was the insertion that Mr Rupert Murdoch is not a fit person to run an international company.

"We all thought that was wildly outside the scope of a select committee, was an improper attempt to influence Ofcom and to tread on areas that are not the province of a select committee," Ms Mensch said.